Flow-adjustable intravenous nutrition infusion device

Abstract

The utility model discloses a flow-adjustable intravenous nutrition infusion device, which comprises an infusion bag, an infusion tube, a flow-adjustable infusion tube and a flow-adjustable infusion tube, a round hole is formed in the flow transition piece, internal threads are arranged on the peripheral wall of the round hole, the front end of the round hole is open, and a liquid inlet channel and a liquid outlet channel which extend to the inner wall of the round hole are formed in the upper end and the lower end of the flow transition piece respectively; the thread adjusting part is in threaded connection with the circular hole; the screwing piece has a free rotating state and a screwing state; and the elastic piece is used for applying elastic acting force to the screwing piece, and the elastic acting force is used for pushing the screwing piece to move from the screwing state to the free rotation state. Compared with the traditional flow regulation, the flow regulation mode is more precise and controllable; the possibility that a patient mistakenly touches the screwing piece to achieve flow adjustment is greatly reduced, and flow adjustment caused by misoperation of the patient can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion devices, and particularly to a flow-adjustable intravenous nutrition infusion device. Background Art

[0002] Intravenous nutrition infusion is a medical means to provide essential nutrients for patients who cannot normally ingest food through the gastrointestinal tract. It includes directly delivering nutritional components such as glucose, amino acids, fat emulsion, vitamins, electrolytes, and trace elements into the blood circulation through intravenous infusion to meet the nutritional needs of patients. The flow rate adjustment of intravenous nutrition infusion is crucial for the safety and treatment effect of patients. Improper flow rate adjustment may lead to various problems, including infusion reactions, acute pulmonary edema, heart failure and other serious complications. For example, too fast infusion rate may cause fever and phlebitis. Especially for some special drugs, such as potassium chloride, if the infusion rate is too fast, it may also cause arrhythmia and even cardiac arrest, requiring immediate rescue.

[0003] In order to prevent patients or non-professionals from operating the adjustment device and causing improper flow rate adjustment, medical staff need to conduct sufficient infusion health education for patients, tell them not to adjust the drip rate by themselves, and regularly check during the infusion process to ensure infusion safety. However, the existing flow rate adjustment structure is still prone to accidental touch, resulting in improper flow rate adjustment. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a flow-adjustable intravenous nutrition infusion device, which can reduce the accidental operation of patients to adjust the flow rate, and the flow rate adjustment is more precise.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0006] A flow-adjustable intravenous nutrition infusion device includes: an infusion bag with an infusion tube at the bottom; a flow transition member with a round hole inside, an internal thread provided on the peripheral wall of the round hole, the front end of the round hole is open, and liquid inlet channels and liquid outlet channels extending to the inner wall of the round hole are respectively provided at the upper and lower ends of the flow transition member, and the liquid inlet channel is communicated with the infusion tube; a threaded adjustment member threadedly connected to the round hole, capable of adjusting the flow cross-sectional area of the liquid inlet channel or / and the liquid outlet channel by rotation; a screwing member having a free rotation state and a screwing state, the screwing member is movably installed on the threaded adjustment member to switch between the free rotation state and the screwing state; in the free rotation state, the screwing member can rotate relative to the threaded adjustment member; in the screwing state, the screwing member can rotate synchronously with the threaded adjustment member; an elastic member for applying an elastic acting force to the screwing member, and the elastic acting force is used to push the screwing member to move from the screwing state to the free rotation state.

[0007] Further, the thread adjusting member is provided with a sunken cavity, a first through hole is provided on the front side of the sunken cavity, the screwing member is movably inserted through the first through hole, and the elastic member is a compression spring arranged between the rear end wall of the sunken cavity and the screwing member.

[0008] Further, a polygonal convex column is provided on the rear end wall of the sunken cavity, the rear end of the screwing member is inserted into the sunken cavity and a polygonal hole adapted to the polygonal convex column is provided on the end face; in the free rotation state, the polygonal convex column is separated from the polygonal hole; in the screwing state, the polygonal convex column is inserted into the polygonal hole so that the screwing member can rotate synchronously with the thread adjusting member, and the compression spring is used to drive the screwing member to move forward, so as to move from the free rotation state to the screwing state.

[0009] Further, the polygonal convex column is provided with a through column extending forward, the screwing member is provided with a second through hole for the through column to pass through, the front end of the through column passes through the second through hole and is provided with a limiting head, and the contour of the limiting head is larger than the second through hole to limit the elastic movement range of the screwing member.

[0010] Further, the through column is detachably connected to the polygonal convex column.

[0011] Further, a threaded shaft is provided at the rear end of the through column, and a threaded hole adapted to the threaded shaft is provided on the polygonal convex column, and the threaded shaft is threadedly connected to the threaded hole.

[0012] Further, the cross-sectional contours of the threaded shaft, the through column and the limiting head decrease in sequence, and the threaded shaft, the through column and the limiting head are integrally formed.

[0013] Further, screwing strips are provided on the outer end face of the screwing member.

[0014] Further, a surrounding ring surrounding the outer periphery of the thread adjusting member is provided on the front outer peripheral edge of the flow transition member.

[0015] Further, a hanging edge strip is provided at the upper end of the infusion bag, and a hanging hole is provided on the hanging edge strip.

[0016] The utility model has the following beneficial effects:

[0017] By rotating the threaded adjusting member, the flow cross-sectional areas of the liquid inlet channel and the liquid outlet channel are adjusted, so as to achieve the purpose of flow rate adjustment. Compared with the traditional flow rate adjustment, this flow rate adjustment method is more precise and controllable. Moreover, the rotation of the threaded adjusting member requires the cooperation of a screwing member. Only when the screwing member is in a screwed state, rotating the screwing member will drive the threaded adjusting member to rotate synchronously to achieve the flow rate adjustment. When the screwing member does not receive a force acting in the direction of the free rotation state, the screwing member will remain in the free rotation state under the action of the elastic member. At this time, no matter how the screwing member is rotated, it will not drive the threaded adjusting member to rotate, and the flow rate adjustment will not be achieved, greatly reducing the possibility that the patient accidentally touches the screwing member to achieve the flow rate adjustment, and can reduce the accidental operation of the patient to adjust the flow rate.

[0018] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the present utility model in detail. Brief Description of the Drawings

[0019] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 is the overall structural schematic diagram of the present utility model;

[0021] Figure 2 is the connection structural schematic diagram of the flow transition member, the threaded adjusting member, the screwing member and the elastic member;

[0022] Figure 3 is Figure 2 the exploded state structural schematic diagram of;

[0023] Figure 4 is Figure 2 the cross-sectional view of;

[0024] Figure 5 is the connection structural schematic diagram of the threaded adjusting member, the through column and the limiting head;

[0025] Figure 6 is the structural schematic diagram of the screwing member.

[0026] Legend Explanation:

[0027] Infusion bag 100, infusion tube 110, hanging edge strip 120, hanging hole 121;

[0028] Flow transition member 200, round hole 210, liquid inlet channel 220, liquid outlet channel 230, enclosing ring 240;

[0029] Thread adjusting member 300, sinking cavity 310, first perforation 320, compression spring 330, polygonal convex column 340, through column 341, limiting head 342, threaded shaft 343, threaded hole 344;

[0030] Turning member 400, polygonal hole 410, second perforation 420, turning strip 430. Specific embodiments

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0035] Please refer to Figure 1 and Figure 2 , a flow rate adjustable intravenous nutrition infusion device in a preferred embodiment provided by the present invention includes an infusion bag 100, a flow transition member 200, a thread adjusting member 300, and a turning member 400.

[0036] The bottom of the infusion bag 100 is provided with an infusion tube 110. Inside the flow transition member 200, there is a round hole 210. The peripheral wall of the round hole 210 is provided with internal threads. The front end of the round hole 210 is open. The upper and lower ends of the flow transition member 200 are respectively provided with a liquid inlet channel 220 and a liquid outlet channel 230 extending to the inner wall of the round hole 210. The liquid inlet channel 220 is communicated with the infusion tube 110. Specifically, the infusion tube 110 is inserted into the upper end of the liquid inlet channel 220.

[0037] The thread adjusting member 300 is threadedly connected to the round hole 210, that is, the outer peripheral wall of the thread adjusting member 300 is provided with external threads adapted to the internal threads of the round hole 210. The thread adjusting member 300 can adjust the flow cross-sectional areas of the liquid inlet channel 220 and the liquid outlet channel 230 by rotation. When the thread adjusting member 300 rotates, it can move back and forth to adjust the flow cross-sectional area, so as to achieve flow adjustment. As Figure 2 and Figure 4 shown, the liquid inlet channel 220 and the liquid outlet channel 230 are aligned vertically, so the thread adjusting member 300 can adjust the flow cross-sectional areas of the liquid inlet channel 220 and the liquid outlet channel 230 together. Of course, in some other embodiments, it is also possible to only adjust the flow cross-sectional area of one of the liquid inlet channel 220 and the liquid outlet channel 230.

[0038] The screwing member 400 has a free rotation state and a screwing state. The screwing member 400 is movably installed on the thread adjusting member 300 to switch between the free rotation state and the screwing state; in the free rotation state, the screwing member 400 can rotate relative to the thread adjusting member 300; in the screwing state, the screwing member 400 can rotate synchronously with the thread adjusting member 300.

[0039] The elastic member is used to apply an elastic force to the screwing member 400, and the elastic force is used to push the screwing member 400 to move from the screwing state to the free rotation state.

[0040] A flow-adjustable intravenous nutrition infusion device provided by the present utility model adjusts the flow cross-sectional areas of the liquid inlet channel 220 and the liquid outlet channel 230 by rotating the threaded adjusting member 300, so as to achieve the purpose of flow adjustment. Compared with the traditional flow adjustment, this flow adjustment method is more precise and controllable. Moreover, the rotation of the threaded adjusting member 300 requires the cooperation of the screwing member 400. Only when the screwing member 400 is in the screwing state, rotating the screwing member 400 will drive the threaded adjusting member 300 to rotate synchronously to achieve the flow rate adjustment. When the screwing member 400 does not receive a force acting in the direction of the free rotation state, the screwing member 400 will remain in the free rotation state under the action of the elastic member. At this time, no matter how the screwing member 400 is rotated, it will not drive the threaded adjusting member 300 to rotate, and the flow adjustment will not be realized, greatly reducing the possibility that the patient accidentally touches the screwing member 400 to realize the flow adjustment, and can reduce the accidental operation of the patient to adjust the flow rate. When the flow rate needs to be adjusted, it is necessary to overcome the elastic force of the elastic member, press the screwing member 400 to the screwing state and then rotate the screwing member 400 to realize the flow rate adjustment control. As Figure 2 shown, scales can be set on the flow transition member 200, and arrows can be set on the threaded adjusting member 300, so that the flow rate can be displayed by comparing the arrows with the scales. Compared with the traditional hand-pushed infusion flow rate adjustment structure, the embodiment of the present utility model makes the flow rate adjustment more accurate and controllable.

[0041] Referring to Figure 3 , in some embodiments of the present utility model, the threaded adjusting member 300 is provided with a sunken cavity 310, a first through hole 320 is provided on the front side of the sunken cavity 310, the screwing member 400 is movably inserted through the first through hole 320, and the elastic member is a compression spring 330 provided between the rear end wall of the sunken cavity 310 and the screwing member 400. The first through hole 320 is a circular hole, and the part of the screwing member 400 inserted through the first through hole 320 is cylindrical, so as to play a role of moving guidance, and the screwing member 400 can move in the front-rear direction and can rotate and move along the first through hole 320.

[0042] Referring to Figures 4 to 6, in a further embodiment of the present utility model, a polygonal convex post 340 is provided on the rear end wall of the sinking cavity 310. The rear end of the screwing member 400 is inserted into the sinking cavity 310 and a polygonal hole 410 adapted to the polygonal convex post 340 is provided on the end face. Specifically, the cross-sections of the polygonal hole 410 and the polygonal convex post 340 are regular polygons, and chamfers are provided at the end edges of the docking ends of the polygonal hole 410 and the polygonal convex post 340 to facilitate the insertion of the polygonal convex post 340 into the polygonal hole 410. In the free rotation state, the polygonal convex post 340 is separated from the polygonal hole 410; in the screwing state, the polygonal convex post 340 is inserted into the polygonal hole 410 so that the screwing member 400 can rotate synchronously with the threaded adjusting member 300. The compression spring 330 is used to drive the screwing member 400 to move forward so as to be able to move from the screwing state to the free rotation state. And since the screwing member 400 can rotate relative to the threaded adjusting member 300 in the free rotation state, the polygonal hole 410 and the polygonal convex post 340 are unlikely to be completely aligned. Therefore, when the flow rate needs to be adjusted, simply pressing the screwing member 400 will not cause the polygonal convex post 340 to be inserted into the polygonal hole 410. Generally, it is necessary to rotate after pressing to make the polygonal convex post 340 inserted into the polygonal hole 410, which further increases the possibility of accidental touch during flow rate adjustment. Usually, only doctors and nurses can correctly install the operation steps for accurate flow rate adjustment.

[0043] Refer to Figures 3 to 6 , in a further embodiment of the present utility model, the polygonal convex post 340 is provided with a through post 341 extending forward. The screwing member 400 is provided with a second through hole 420 for the through post 341 to pass through. The front end of the through post 341 passes through the second through hole 420 and is provided with a limiting head 342. The contour of the limiting head 342 is larger than that of the second through hole 420 to limit the elastic movement range of the screwing member 400 and prevent the screwing member 400 from detaching and falling off. Usually, when the limiting head 342 abuts against the screwing member 400, the screwing member 400 is in the free rotation state.

[0044] Refer to Figure 3 and Figure 4 , in a further embodiment of the present utility model, the through post 341 is detachably connected to the polygonal convex post 340 to avoid structural interference during installation, which may cause difficult installation.

[0045] Refer to Figure 3 and Figure 4 , in a further embodiment of the present utility model, the rear end of the through post 341 is provided with a threaded shaft 343, and the polygonal convex post 340 is provided with a threaded hole 344 adapted to the threaded shaft 343. The threaded shaft 343 is threadedly connected to the threaded hole 344, so as to realize the detachable connection of the through post 341 through threaded connection to facilitate assembly.

[0046] Refer to Figure 3 and Figure 4, in a further embodiment of the present utility model, the cross-sectional profiles of the threaded shaft 343, the through-column 341, and the limiting head 342 decrease in sequence. Thus, during installation, the threaded shaft 343 can pass through the first through-hole 320 and the second through-hole 420 and then be connected to the threaded hole 344, facilitating assembly. The threaded shaft 343, the through-column 341, and the limiting head 342 are integrally formed, reducing the number of components and simplifying the assembly.

[0047] Referring to Figure 2 and Figure 3 , in a further embodiment of the present utility model, the outer end surface of the screwing member 400 is provided with screwing strips 430 to facilitate the screwing operation.

[0048] In a further embodiment of the present utility model, the front outer peripheral edge of the flow transition member 200 is provided with a retaining ring 240 that surrounds the outer periphery of the threaded adjustment member 300. The retaining ring 240 is used to block the threaded adjustment member 300 to prevent direct accidental contact with the threaded adjustment member 300, so that the threaded adjustment member 300 can only be operated to rotate by the screwing member 400.

[0049] Referring to Figure 1 , in a further embodiment of the present utility model, the upper end of the infusion bag 100 is provided with a hanging strip 120, and the hanging strip 120 is provided with a hanging hole 121 to facilitate hanging on an infusion stand.

[0050] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flow-adjustable intravenous nutrition infusion device, characterized in that: include: An infusion bag (100) having an infusion tube (110) at the bottom; A flow transition piece (200) is provided with a circular hole (210) inside, the circumferential wall of the circular hole (210) is provided with an internal thread, the front end of the circular hole (210) is open, and the upper and lower ends of the flow transition piece (200) are respectively provided with a liquid inlet channel (220) and a liquid outlet channel (230) extending to the inner wall of the circular hole (210), and the liquid inlet channel (220) is connected to the infusion tube (110); A threaded adjustment member (300) is threadedly connected to the circular hole (210) and can adjust the flow cross-sectional area of ​​the liquid inlet channel (220) and / or the liquid outlet channel (230) by rotation; The screwing member (400) has a free rotation state and a screwing state. The screwing member (400) is movably mounted on the threaded adjustment member (300) to switch between the free rotation state and the screwing state. In the free rotation state, the screwing member (400) can rotate relative to the threaded adjustment member (300); in the screwing state, the screwing member (400) can rotate synchronously with the threaded adjustment member (300). The elastic member is used to apply an elastic force to the screwing member (400), wherein the elastic force is used to push the screwing member (400) to move from a screwed state to a free rotation state.

2. The flow-adjustable intravenous nutrition infusion device according to claim 1, characterized in that: The threaded adjustment member (300) is provided with a sinking cavity (310), a first through hole (320) is provided at the front side of the sinking cavity (310), the screwing member (400) is movably inserted into the first through hole (320), and the elastic member is a compression spring (330) provided between the rear end wall of the sinking cavity (310) and the screwing member (400).

3. The flow-adjustable intravenous nutrition infusion device according to claim 2, characterized in that: A polygonal convex column (340) is provided on the rear end wall of the sinking cavity (310); the rear end of the screwing member (400) is inserted into the sinking cavity (310) and the end surface is provided with a polygonal hole (410) adapted to the polygonal convex column (340); in the free rotation state, the polygonal convex column (340) is separated from the polygonal hole (410); in the screwing state, the polygonal convex column (340) is inserted into the polygonal hole (410) so that the screwing member (400) can rotate synchronously with the threaded adjusting member (300); the compression spring (330) is used to drive the screwing member (400) to move forward so that it can move from the screwing state to the free rotation state.

4. The flow-adjustable intravenous nutrition infusion device according to claim 3, characterized in that: The polygonal convex column (340) is provided with a through column (341) extending forward, and the screwing member (400) is provided with a second through hole (420) for the through column (341) to pass through. The front end of the through column (341) passes through the second through hole (420) and is provided with a limit head (342). The contour of the limit head (342) is larger than the second through hole (420) so as to limit the elastic range of movement of the screwing member (400).

5. The flow-adjustable intravenous nutrition infusion device according to claim 4, characterized in that: The through column (341) is detachably connected to the polygonal convex column (340).

6. The flow-adjustable intravenous nutrition infusion device according to claim 5, characterized in that: The rear end of the through column (341) is provided with a threaded shaft (343), the polygonal convex column (340) is provided with a threaded hole (344) adapted to the threaded shaft (343), and the threaded shaft (343) is threadedly connected to the threaded hole (344).

7. The flow-adjustable intravenous nutrition infusion device according to claim 6, characterized in that: The cross-sectional profiles of the threaded shaft (343), the through column (341) and the limiting head (342) decrease in sequence, and the threaded shaft (343), the through column (341) and the limiting head (342) are integrally formed.

8. The flow-adjustable intravenous nutrition infusion device according to claim 1, characterized in that: The outer end surface of the screwing member (400) is provided with a screwing strip (430).

9. The flow-adjustable intravenous nutrition infusion device according to claim 1, characterized in that: The front peripheral edge of the flow transition piece (200) is provided with a retaining ring (240) surrounding the outer periphery of the threaded adjustment piece (300).

10. The flow-adjustable intravenous nutrition infusion device according to claim 1, characterized in that: The upper end of the infusion bag (100) is provided with a hanging strip (120), and the hanging strip (120) is provided with a hanging hole (121).

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